Table 4

Grading Scale for Image Quality for Assessment of the Aortic Root

GradeDefinition
Good (diagnostic)
  • Sharp depiction of the annular contour with sufficient contrast attenuation in the absence of artifacts

Fair (diagnostic)
  • Low contrast attenuation

  • Increased image noise

  • Mild motion artifacts, double contours or stair-step artifacts

Poor (non-diagnostic)
  • Too low contrast attenuation

  • Excessive image noise

  • Excessive motion artifacts or double contours

  • Pronounced stair-step artifact transecting the annular contour